By Andreas Rinke and Matthias Williams BERLIN (Reuters) -Election winner Friedrich Merz on Tuesday ruled out a quick reform to Germany's state borrowing limits known as the "debt brake" and said it was too soon to say whether the outgoing parliament could wave through a massive military spending boost.

Germany's mainstream conservatives won the country's national election, while a far-right party surged to become the nation’s second-largest party, according to provisional results following Sunday’s election.

The leader of the conservative Christian Democrats celebrated as exit polls indicated they had won Sunday’s election, which had the highest voter turnout in decades.